Kim, Ji-Hye; Anastassiou, George A.; Park, Choonkil Additive \(\rho\)-functional inequalities in fuzzy normed spaces. (English) Zbl 1348.39014 J. Comput. Anal. Appl. 21, No. 6, 1115-1126 (2016). MSC: 39B62 39B52 46S40 39B82 PDF BibTeX XML Cite \textit{J.-H. Kim} et al., J. Comput. Anal. Appl. 21, No. 6, 1115--1126 (2016; Zbl 1348.39014)
Lee, Jung Rye; Kim, Ji-Hye; Park, Choonkil A fixed point approach to the stability of an additive-quadratic-cubic-quartic functional equation. (English) Zbl 1187.39042 Fixed Point Theory Appl. 2010, Article ID 185780, 16 p. (2010). MSC: 39B82 39B52 PDF BibTeX XML Cite \textit{J. R. Lee} et al., Fixed Point Theory Appl. 2010, Article ID 185780, 16 p. (2010; Zbl 1187.39042) Full Text: DOI EuDML
Park, Choonkil; Kim, Ji-Hye The stability of a quadratic functional equation with the fixed point alternative. (English) Zbl 1189.39031 Abstr. Appl. Anal. 2009, Article ID 907167, 11 p. (2009). MSC: 39B82 39B52 PDF BibTeX XML Cite \textit{C. Park} and \textit{J.-H. Kim}, Abstr. Appl. Anal. 2009, Article ID 907167, 11 p. (2009; Zbl 1189.39031) Full Text: DOI EuDML